
Horde Alternatives
Horde is described as 'Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project' and is a webmail provider in the office & productivity category. There are more than 25 alternatives to Horde for a variety of platforms, including Web-based, Self-Hosted, Linux, Android and iPhone apps. The best Horde alternative is Gmail, which is free. Other great apps like Horde are Zoho Mail, Roundcube, Mailpile and mailcow: dockerized.
Alternatives list

Afterlogic Aurora is an enterprise collaboration system for small and medium-sized business. Aurora provides collaboration of webmail, contacts, calendar, files and helpdesk modules.
Cost / License
- Paid
- Open Source
Application types
Platforms
- Windows
- Online
- Android
- iPhone
- Self-Hosted


+2
- 43 CrossBox alternatives
Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.
Cost / License
- Paid
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Self-Hosted


+9
Web-based team collaboration suite combining email client, calendar, contact and task tools, CRM, project and file management, file sharing, trouble tickets, Rocket.Chat chat, and Collabora online editing. Offers open source, self-hosted, and SaaS options.
Cost / License
- Freemium
- Open Source (GPL-2.0)
Application types
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)


+6
The Gmail you love, now lighter and just as fast. Enjoy a smart inbox that keeps your messages safe and you organized. Receive notifications when mail arrives, then read and respond both online & offline. Plus, find messages quickly with powerful search and lots more.


+1
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Linux



Unofficial, free and open-source Google Inbox Desktop App. Built using electron, Inboxer includes a menu bar which is globalmenu compatible and works, and keyboard shortcuts.

Postaci (Turkish for Postman) is multiplatform Webmail software which is database independent, multilanguage, POP3/IMAP, and fully MIME-compatible. While using POP3 mode to fetch messages it uses database fields to simulate IMAP folders, on which you can save, move, delete, and...
GyazMail is a email client software for Mac OS X, based on Cocoa framework, simple, easy-to-use with many features.

Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.



The ultimate email service for personal, professional and business use.
Unique Email Addresses MeMail gives you the ability to get the email address that best represents you! 1000s of email addresses for fun, personal or business use.
Ad-Free & Secure Work Space The MeMail.
NeoMail is a web-based mail client that allows users to access their mail spools and send messages. It does not require a POP3 server, or any shell access for the users. It interfaces directly with user mail spools.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Online







































